ui-tree.c

   1 /* ui-tree.c: functions for tree output
   2  *
   3  * Copyright (C) 2006-2014 cgit Development Team <cgit@lists.zx2c4.com>
   4  *
   5  * Licensed under GNU General Public License v2
   6  *   (see COPYING for full license text)
   7  */
   8
   9 #include <ctype.h>
  10 #include "cgit.h"
  11 #include "ui-tree.h"
  12 #include "html.h"
  13 #include "ui-shared.h"
  14
  15 struct walk_tree_context {
  16         char *curr_rev;
  17         char *match_path;
  18         int state;
  19 };
  20
  21 static void print_text_buffer(const char *name, char *buf, unsigned long size)
  22 {
  23         unsigned long lineno, idx;
  24         const char *numberfmt = "<a id='n%1$d' href='#n%1$d'>%1$d</a>\n";
  25
  26         html("<table summary='blob content' class='blob'>\n");
  27
  28         if (ctx.cfg.enable_tree_linenumbers) {
  29                 html("<tr><td class='linenumbers'><pre>");
  30                 idx = 0;
  31                 lineno = 0;
  32
  33                 if (size) {
  34                         htmlf(numberfmt, ++lineno);
  35                         while (idx < size - 1) { // skip absolute last newline
  36                                 if (buf[idx] == '\n')
  37                                         htmlf(numberfmt, ++lineno);
  38                                 idx++;
  39                         }
  40                 }
  41                 html("</pre></td>\n");
  42         }
  43         else {
  44                 html("<tr>\n");
  45         }
  46
  47         if (ctx.repo->source_filter) {
  48                 char *filter_arg = xstrdup(name);
  49                 html("<td class='lines'><pre><code>");
  50                 cgit_open_filter(ctx.repo->source_filter, filter_arg);
  51                 html_raw(buf, size);
  52                 cgit_close_filter(ctx.repo->source_filter);
  53                 free(filter_arg);
  54                 html("</code></pre></td></tr></table>\n");
  55                 return;
  56         }
  57
  58         html("<td class='lines'><pre><code>");
  59         html_txt(buf);
  60         html("</code></pre></td></tr></table>\n");
  61 }
  62
  63 #define ROWLEN 32
  64
  65 static void print_binary_buffer(char *buf, unsigned long size)
  66 {
  67         unsigned long ofs, idx;
  68         static char ascii[ROWLEN + 1];
  69
  70         html("<table summary='blob content' class='bin-blob'>\n");
  71         html("<tr><th>ofs</th><th>hex dump</th><th>ascii</th></tr>");
  72         for (ofs = 0; ofs < size; ofs += ROWLEN, buf += ROWLEN) {
  73                 htmlf("<tr><td class='right'>%04lx</td><td class='hex'>", ofs);
  74                 for (idx = 0; idx < ROWLEN && ofs + idx < size; idx++)
  75                         htmlf("%*s%02x",
  76                               idx == 16 ? 4 : 1, "",
  77                               buf[idx] & 0xff);
  78                 html(" </td><td class='hex'>");
  79                 for (idx = 0; idx < ROWLEN && ofs + idx < size; idx++)
  80                         ascii[idx] = isgraph(buf[idx]) ? buf[idx] : '.';
  81                 ascii[idx] = '\0';
  82                 html_txt(ascii);
  83                 html("</td></tr>\n");
  84         }
  85         html("</table>\n");
  86 }
  87
  88 static void print_object(const unsigned char *sha1, char *path, const char *basename, const char *rev)
  89 {
  90         enum object_type type;
  91         char *buf;
  92         unsigned long size;
  93
  94         type = sha1_object_info(sha1, &size);
  95         if (type == OBJ_BAD) {
  96                 cgit_print_error("Bad object name: %s", sha1_to_hex(sha1));
  97                 return;
  98         }
  99
 100         buf = read_sha1_file(sha1, &type, &size);
 101         if (!buf) {
 102                 cgit_print_error("Error reading object %s", sha1_to_hex(sha1));
 103                 return;
 104         }
 105
 106         htmlf("blob: %s (", sha1_to_hex(sha1));
 107         cgit_plain_link("plain", NULL, NULL, ctx.qry.head,
 108                         rev, path);
 109         html(")\n");
 110
 111         if (ctx.cfg.max_blob_size && size / 1024 > ctx.cfg.max_blob_size) {
 112                 htmlf("<div class='error'>blob size (%ldKB) exceeds display size limit (%dKB).</div>",
 113                                 size / 1024, ctx.cfg.max_blob_size);
 114                 return;
 115         }
 116
 117         if (buffer_is_binary(buf, size))
 118                 print_binary_buffer(buf, size);
 119         else
 120                 print_text_buffer(basename, buf, size);
 121 }
 122
 123
 124 static int ls_item(const unsigned char *sha1, const char *base, int baselen,
 125                    const char *pathname, unsigned int mode, int stage,
 126                    void *cbdata)
 127 {
 128         struct walk_tree_context *walk_tree_ctx = cbdata;
 129         char *name;
 130         struct strbuf fullpath = STRBUF_INIT;
 131         struct strbuf class = STRBUF_INIT;
 132         enum object_type type;
 133         unsigned long size = 0;
 134
 135         name = xstrdup(pathname);
 136         strbuf_addf(&fullpath, "%s%s%s", ctx.qry.path ? ctx.qry.path : "",
 137                     ctx.qry.path ? "/" : "", name);
 138
 139         if (!S_ISGITLINK(mode)) {
 140                 type = sha1_object_info(sha1, &size);
 141                 if (type == OBJ_BAD) {
 142                         htmlf("<tr><td colspan='3'>Bad object: %s %s</td></tr>",
 143                               name,
 144                               sha1_to_hex(sha1));
 145                         return 0;
 146                 }
 147         }
 148
 149         html("<tr><td class='ls-mode'>");
 150         cgit_print_filemode(mode);
 151         html("</td><td>");
 152         if (S_ISGITLINK(mode)) {
 153                 cgit_submodule_link("ls-mod", fullpath.buf, sha1_to_hex(sha1));
 154         } else if (S_ISDIR(mode)) {
 155                 cgit_tree_link(name, NULL, "ls-dir", ctx.qry.head,
 156                                walk_tree_ctx->curr_rev, fullpath.buf);
 157         } else {
 158                 char *ext = strrchr(name, '.');
 159                 strbuf_addstr(&class, "ls-blob");
 160                 if (ext)
 161                         strbuf_addf(&class, " %s", ext + 1);
 162                 cgit_tree_link(name, NULL, class.buf, ctx.qry.head,
 163                                walk_tree_ctx->curr_rev, fullpath.buf);
 164         }
 165         htmlf("</td><td class='ls-size'>%li</td>", size);
 166
 167         html("<td>");
 168         cgit_log_link("log", NULL, "button", ctx.qry.head,
 169                       walk_tree_ctx->curr_rev, fullpath.buf, 0, NULL, NULL,
 170                       ctx.qry.showmsg);
 171         if (ctx.repo->max_stats)
 172                 cgit_stats_link("stats", NULL, "button", ctx.qry.head,
 173                                 fullpath.buf);
 174         if (!S_ISGITLINK(mode))
 175                 cgit_plain_link("plain", NULL, "button", ctx.qry.head,
 176                                 walk_tree_ctx->curr_rev, fullpath.buf);
 177         html("</td></tr>\n");
 178         free(name);
 179         strbuf_release(&fullpath);
 180         strbuf_release(&class);
 181         return 0;
 182 }
 183
 184 static void ls_head()
 185 {
 186         html("<table summary='tree listing' class='list'>\n");
 187         html("<tr class='nohover'>");
 188         html("<th class='left'>Mode</th>");
 189         html("<th class='left'>Name</th>");
 190         html("<th class='right'>Size</th>");
 191         html("<th/>");
 192         html("</tr>\n");
 193 }
 194
 195 static void ls_tail()
 196 {
 197         html("</table>\n");
 198 }
 199
 200 static void ls_tree(const unsigned char *sha1, char *path, struct walk_tree_context *walk_tree_ctx)
 201 {
 202         struct tree *tree;
 203         struct pathspec paths = {
 204                 .nr = 0
 205         };
 206
 207         tree = parse_tree_indirect(sha1);
 208         if (!tree) {
 209                 cgit_print_error("Not a tree object: %s", sha1_to_hex(sha1));
 210                 return;
 211         }
 212
 213         ls_head();
 214         read_tree_recursive(tree, "", 0, 1, &paths, ls_item, walk_tree_ctx);
 215         ls_tail();
 216 }
 217
 218
 219 static int walk_tree(const unsigned char *sha1, const char *base, int baselen,
 220                      const char *pathname, unsigned mode, int stage,
 221                      void *cbdata)
 222 {
 223         struct walk_tree_context *walk_tree_ctx = cbdata;
 224         static char buffer[PATH_MAX];
 225
 226         if (walk_tree_ctx->state == 0) {
 227                 memcpy(buffer, base, baselen);
 228                 strcpy(buffer + baselen, pathname);
 229                 if (strcmp(walk_tree_ctx->match_path, buffer))
 230                         return READ_TREE_RECURSIVE;
 231
 232                 if (S_ISDIR(mode)) {
 233                         walk_tree_ctx->state = 1;
 234                         ls_head();
 235                         return READ_TREE_RECURSIVE;
 236                 } else {
 237                         print_object(sha1, buffer, pathname, walk_tree_ctx->curr_rev);
 238                         return 0;
 239                 }
 240         }
 241         ls_item(sha1, base, baselen, pathname, mode, stage, walk_tree_ctx);
 242         return 0;
 243 }
 244
 245
 246 /*
 247  * Show a tree or a blob
 248  *   rev:  the commit pointing at the root tree object
 249  *   path: path to tree or blob
 250  */
 251 void cgit_print_tree(const char *rev, char *path)
 252 {
 253         unsigned char sha1[20];
 254         struct commit *commit;
 255         struct pathspec_item path_items = {
 256                 .match = path,
 257                 .len = path ? strlen(path) : 0
 258         };
 259         struct pathspec paths = {
 260                 .nr = path ? 1 : 0,
 261                 .items = &path_items
 262         };
 263         struct walk_tree_context walk_tree_ctx = {
 264                 .match_path = path,
 265                 .state = 0
 266         };
 267
 268         if (!rev)
 269                 rev = ctx.qry.head;
 270
 271         if (get_sha1(rev, sha1)) {
 272                 cgit_print_error("Invalid revision name: %s", rev);
 273                 return;
 274         }
 275         commit = lookup_commit_reference(sha1);
 276         if (!commit || parse_commit(commit)) {
 277                 cgit_print_error("Invalid commit reference: %s", rev);
 278                 return;
 279         }
 280
 281         walk_tree_ctx.curr_rev = xstrdup(rev);
 282
 283         if (path == NULL) {
 284                 ls_tree(commit->tree->object.sha1, NULL, &walk_tree_ctx);
 285                 goto cleanup;
 286         }
 287
 288         read_tree_recursive(commit->tree, "", 0, 0, &paths, walk_tree, &walk_tree_ctx);
 289         if (walk_tree_ctx.state == 1)
 290                 ls_tail();
 291
 292 cleanup:
 293         free(walk_tree_ctx.curr_rev);
 294 }